Definition of efficiency in English:



  • 1[mass noun] The state or quality of being efficient.

    ‘greater energy efficiency’
    • ‘The nation's translation industry is often criticized for its poor quality and lack of efficiency.’
    • ‘The announcement, accompanied by proposals to achieve greater energy efficiency, has delighted environmental campaigners.’
    • ‘Many options that improve energy efficiency are available.’
    • ‘We will also try to boost operational efficiency to offset a possible decline in our profitability.’
    • ‘The plan mostly includes the increase of energy efficiency and cuts in the amount of energy we use.’
    • ‘For us, it is important to increase efficiency, effectiveness and transparency in budgeting.’
    • ‘Increased productivity and efficiency in business today depend on the appliance of science.’
    • ‘Too much pressure is detrimental to our effectiveness, productivity and efficiency.’
    • ‘Like any factory if the working environment isn't ideal productivity and efficiency will suffer.’
    • ‘There is no guarantee that financial liberalization will enhance economic efficiency, nor that privatization will guarantee competition.’
    • ‘The recuperator recovers energy from the exhaust gases to increase fuel efficiency.’
    • ‘The harbor has been working to improve service quality and operational efficiency.’
    • ‘They are clamouring for ways to increase efficiency without taking any risks with the quality of the food.’
    • ‘He spends most of his time assessing quality and efficiency at the plant.’
    • ‘As the amount of glass used in a house increases, the energy efficiency usually decreases.’
    • ‘Sri Lanka has identified health as an area where information technology should be used to boost efficiency and service quality.’
    • ‘The initial goal of the reformers was to achieve greater economic efficiency through the rapid privatization of all state-owned assets.’
    • ‘As a consequence, the Senate began to act with new efficiency and effectiveness.’
    • ‘Many laboratories have been quite successful in examining the efficiency of their operations.’
    • ‘The regulator also said the company needed to focus on improving efficiency and quality of its service.’
    organization, order, orderliness, planning, regulation, logicality, coherence, productivity, effectiveness, cost-effectiveness
    competence, capability, ability, proficiency, adeptness, deftness, expertise, professionalism, skilfulness, skill, effectiveness, productivity, organization
    View synonyms
    1. 1.1[count noun]An action designed to achieve efficiency.
      ‘the reforms will lead to efficiencies and savings’
      • ‘He said it would further the rationalisation of the dairy processing industry in Ireland and lead to cost savings through greater efficiencies.’
      • ‘Achieving greater operating efficiencies is one way to counteract this problem.’
      • ‘It also pledged an extra 1.5% in both years if the company met targets on punctuality and achieved cost efficiencies.’
      • ‘The more we rely on markets to achieve efficiencies, the more we need transparent reporting.’
      • ‘Hargreaves says there are new ways of delivering water and sewerage services to increase efficiencies.’
      • ‘Dr O'Donovan said he feared that the scale of cuts proposed could not be achieved through efficiencies and financial juggling alone.’
      • ‘Some projects which were funded simply achieved budgetary efficiencies, he said, and did not require as much money as had been first thought.’
      • ‘Scottish Water has begun making some of the tough decisions to achieve the efficiencies the Water Industry Commissioner requested.’
      • ‘The group has changed its name in an effort to boost business by improving services and increasing operational efficiencies.’
      • ‘Mr Prendergast said a constant and ongoing review is in place at Lakeland to identify where further operating efficiencies can be achieved.’
      • ‘With costs of production increasing and pressure on milk prices, improving efficiencies and controlling costs are all important.’
      • ‘Farmers will play their part and continue improving their efficiencies, and grow their enterprise to the extent that they can.’
      • ‘The following day's headlines focused on McConnell's comments on achieving greater efficiencies in the public sector.’
      • ‘The government and business must press ahead with full-scale corporate restructuring if greater efficiencies are to be achieved.’
      • ‘It has continued its growth, improved its efficiencies, struck huge outsourcing deals and kept its place around the top of the corporate finance league tables.’
      • ‘He remains committed to improving efficiencies to deliver strong profit growth.’
      • ‘When mergers do occur, rationalization of assets based on your plan of action is a key step in achieving overall efficiencies.’
      • ‘What's more, an operation will see the elimination of waste because of the efficiencies achieved.’
      • ‘Environmental management can achieve efficiencies in how we operate at a business level, with resulting bottom line benefits.’
      • ‘In terms of the market, the company and its growers must look to all their operations to achieve further efficiencies.’
    2. 1.2technical [count noun]The ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in.
      ‘the boiler has an efficiency of 45 per cent’
      • ‘Chiller energy efficiencies have steadily climbed over the past years.’
      • ‘They appeal because of the very high energy efficiencies they offer and the lack of environmental impact.’
      • ‘They emit no pollutants and have impressive energy efficiencies.’
      • ‘Compare the energy efficiencies and operating costs of competing models.’
      • ‘It is true that the fuel cells themselves have very low emissions and efficiencies up to 55 percent.’


Late 16th century (in the sense ‘the fact of being an efficient cause’): from Latin efficientia, from efficere accomplish (see effect).